Orbital rotor compressor having an inlet passage in the rotor

Abstract

A compressor arrangement is provided with an eccentrically controlled slidable vane. The vane is movable to release excessive pressure build-up so as to eliminate requirements for a safety valve.

What is claimed is: 
     
       1. A compressor comprising: a cylinder,   a crank shaft having an eccentric shaft,   a hub member rotatably supported by said crank shaft,   a rotor disposed in said cylinder and supported by said eccentric shaft,   end plates fixed to each end of said cylinder and provided with inlet passages extending to the inside of said cylinder,   a support element extending between and connecting said hub member and said rotor and having a groove provided therein,   a vane member disposed in said groove,   spring means disposed between said end plates and said vane member for continuously urging said vane member to contact an inner surface of said cylinder,   a chamber defined by said cylinder, said rotor and said end plates,   an inlet port provided in said rotor to connect said inlet passage with said chamber, and   an outlet port provided in said cylinder to communicate with said chamber, wherein volume of said chamber is varied by movement of said rotor driven by said crank shaft.